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When to Plant Choy Sum in Alaska

Alaska spans USDA hardiness 1a to 8b (zones 1a to 8b on this page). Plant choy sum by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.

Jump to: Zone 1a · Zone 1b · Zone 2a · Zone 2b · Zone 3a · Zone 3b · Zone 4a · Zone 4b · Zone 5a · Zone 5b · Zone 6a · Zone 6b · Zone 7a · Zone 7b · Zone 8a · Zone 8b

Choy Sum planting calendar for Alaska, Zone 1a

Average last spring frost

May 24

Average first fall frost

August 25

spring planting

🌿

Direct sow

May 10

🌾

Projected first harvest

Jun 24

fall planting

🌿

Direct sow

Jun 30

🌾

Projected first harvest

Aug 14

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 1a (approximate)

Choy Sum is ready to harvest in about 45 days.

Choy Sum planting calendar for Alaska, Zone 1b

Average last spring frost

May 29

Average first fall frost

August 28

spring planting

🌿

Direct sow

May 15

🌾

Projected first harvest

Jun 29

fall planting

🌿

Direct sow

Jul 3

🌾

Projected first harvest

Aug 17

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 1b (approximate)

Choy Sum is ready to harvest in about 45 days.

Choy Sum planting calendar for Alaska, Zone 2a

Average last spring frost

May 24

Average first fall frost

September 5

spring planting

🌿

Direct sow

May 10

🌾

Projected first harvest

Jun 24

fall planting

🌿

Direct sow

Jul 11

🌾

Projected first harvest

Aug 25

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 2a (approximate)

Choy Sum is ready to harvest in about 45 days.

Choy Sum planting calendar for Alaska, Zone 2b

Average last spring frost

May 30

Average first fall frost

September 6

spring planting

🌿

Direct sow

May 16

🌾

Projected first harvest

Jun 30

fall planting

🌿

Direct sow

Jul 12

🌾

Projected first harvest

Aug 26

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 2b (approximate)

Choy Sum is ready to harvest in about 45 days.

Choy Sum planting calendar for Alaska, Zone 3a

Average last spring frost

May 30

Average first fall frost

September 10

spring planting

🌿

Direct sow

May 16

🌾

Projected first harvest

Jun 30

fall planting

🌿

Direct sow

Jul 16

🌾

Projected first harvest

Aug 30

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 3a (approximate)

Choy Sum is ready to harvest in about 45 days. Full zone 3 guide (both 3a and 3b) →

Choy Sum planting calendar for Alaska, Zone 3b

Average last spring frost

May 20

Average first fall frost

September 15

spring planting

🌿

Direct sow

May 6

🌾

Projected first harvest

Jun 20

fall planting

🌿

Direct sow

Jul 21

🌾

Projected first harvest

Sep 4

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 3b (approximate)

Choy Sum is ready to harvest in about 45 days. Full zone 3 guide (both 3a and 3b) →

Choy Sum planting calendar for Alaska, Zone 4a

Average last spring frost

May 15

Average first fall frost

September 20

spring planting

🌿

Direct sow

May 1

🌾

Projected first harvest

Jun 15

fall planting

🌿

Direct sow

Jul 26

🌾

Projected first harvest

Sep 9

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 4a (approximate)

Choy Sum is ready to harvest in about 45 days. Full zone 4 guide (both 4a and 4b) →

Choy Sum planting calendar for Alaska, Zone 4b

Average last spring frost

May 10

Average first fall frost

September 25

spring planting

🌿

Direct sow

Apr 26

🌾

Projected first harvest

Jun 10

fall planting

🌿

Direct sow

Jul 31

🌾

Projected first harvest

Sep 14

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 4b (approximate)

Choy Sum is ready to harvest in about 45 days. Full zone 4 guide (both 4a and 4b) →

Choy Sum planting calendar for Alaska, Zone 5a

Average last spring frost

May 5

Average first fall frost

October 1

spring planting

🌿

Direct sow

Apr 21

🌾

Projected first harvest

Jun 5

fall planting

🌿

Direct sow

Aug 6

🌾

Projected first harvest

Sep 20

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 5a (approximate)

Choy Sum is ready to harvest in about 45 days. Full zone 5 guide (both 5a and 5b) →

Choy Sum planting calendar for Alaska, Zone 5b

Average last spring frost

April 30

Average first fall frost

October 5

spring planting

🌿

Direct sow

Apr 16

🌾

Projected first harvest

May 31

fall planting

🌿

Direct sow

Aug 10

🌾

Projected first harvest

Sep 24

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 5b (approximate)

Choy Sum is ready to harvest in about 45 days. Full zone 5 guide (both 5a and 5b) →

Choy Sum planting calendar for Alaska, Zone 6a

Average last spring frost

April 25

Average first fall frost

October 10

spring planting

🌿

Direct sow

Apr 11

🌾

Projected first harvest

May 26

fall planting

🌿

Direct sow

Aug 15

🌾

Projected first harvest

Sep 29

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 6a (approximate)

Choy Sum is ready to harvest in about 45 days. Full zone 6 guide (both 6a and 6b) →

Choy Sum planting calendar for Alaska, Zone 6b

Average last spring frost

April 20

Average first fall frost

October 15

spring planting

🌿

Direct sow

Apr 6

🌾

Projected first harvest

May 21

fall planting

🌿

Direct sow

Aug 20

🌾

Projected first harvest

Oct 4

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 6b (approximate)

Choy Sum is ready to harvest in about 45 days. Full zone 6 guide (both 6a and 6b) →

Choy Sum planting calendar for Alaska, Zone 7a

Average last spring frost

April 15

Average first fall frost

October 20

spring planting

🌿

Direct sow

Apr 1

🌾

Projected first harvest

May 16

fall planting

🌿

Direct sow

Aug 25

🌾

Projected first harvest

Oct 9

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 7a (approximate)

Choy Sum is ready to harvest in about 45 days. Full zone 7 guide (both 7a and 7b) →

Choy Sum planting calendar for Alaska, Zone 7b

Average last spring frost

April 10

Average first fall frost

October 30

spring planting

🌿

Direct sow

Mar 27

🌾

Projected first harvest

May 11

fall planting

🌿

Direct sow

Sep 4

🌾

Projected first harvest

Oct 19

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 7b (approximate)

Choy Sum is ready to harvest in about 45 days. Full zone 7 guide (both 7a and 7b) →

Choy Sum planting calendar for Alaska, Zone 8a

Average last spring frost

April 1

Average first fall frost

November 10

spring planting

🌿

Direct sow

Mar 18

🌾

Projected first harvest

May 2

fall planting

🌿

Direct sow

Sep 15

🌾

Projected first harvest

Oct 30

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 8a (approximate)

Choy Sum is ready to harvest in about 45 days. Full zone 8 guide (both 8a and 8b) →

Choy Sum planting calendar for Alaska, Zone 8b

Average last spring frost

March 20

Average first fall frost

November 20

spring planting

🌿

Direct sow

Mar 6

🌾

Projected first harvest

Apr 20

fall planting

🌿

Direct sow

Sep 25

🌾

Projected first harvest

Nov 9

J
F
M
A
M
J
J
A
S
O
N
D

spring planting

fall planting

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 8b (approximate)

Choy Sum is ready to harvest in about 45 days. Full zone 8 guide (both 8a and 8b) →

Not sure which half-zone you're in? Set your ZIP in HomeSown for dates tuned to your exact location.

Varieties to grow

1 variety of choy sum in the HomeSown library. Tap any for its full grow guide.

Choy Sum →

Common problems with choy sum

What to watch for, with identification and treatment for each

GroundhogsAntsAphidsArmywormsBirdsCricketsBacterial Soft RotAnthracnoseDamping-OffFrost & Cold InjuryGray MoldHerbicide Injury

🌱 Grow choy sum with a calendar built for your exact yard

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choy sum — full zone guide

All zonesZone 3 →Zone 4 →Zone 5 →Zone 6 →Zone 7 →Zone 8 →